Four SDI-NACO images

Four images of Titan, obtained simultaneously with the NACO adaptive optics instrument in the SDI observing mode with the corresponding wavebands indicated. The individual images have a diameter of 0.86 arcsec and have here been magnified for clarity. As explained in the text, the images obtained at wavelengths 1.575 and 1.600 μm penetrate right to the surface while the images at 1.625 μm show the comparatively featureless atmosphere.